如何以简洁的pythonic方式为类中的所有变量提供相同的方法？

def apply_method_to_all_variables(method):
    def decorator(cls):
        for attr_name, attr_value in cls.__dict__.items():
            if not attr_name.startswith('__') and not callable(attr_value):
                setattr(cls, attr_name, method)
        return cls
    return decorator

@apply_method_to_all_variables
class MyClass:
    def __init__(self, x, y, z):
        self.x = x
        self.y = y
        self.z = z

    def my_method(self):
        print("This is a method.")

def my_new_method(self):
    print("This is the new method.")

MyClass.my_method = my_new_method

obj = MyClass(1, 2, 3)
obj.my_method()  # 输出：This is the new method.